AUSTRALIAN MONITOR AMIS26 User manual

INSTALLATION SERIES
AMIS26
2 Input, 6 Output Distribution Amplifier
Clever Features, Contractor Friendly
Installation
Operation
Manual
&
INPUT
ON
INSTALLATION SERIES
AMIS26
+10dB
-10dB
0dB
-20dB
0dB 0dB
-15dB -15dB+15dB +15dB
AB
OFF OFF OFF OFF OFF OFF0dB 0dB 0dB 0dB 0dB 0dB
OFF OFF OFF OFF OFF OFF
AAAAAABBBBBB
OUTPUT 1 OUTPUT 2 OUTPUT 3 OUTPUT 4 OUTPUT 5 OUTPUT 6
AB

CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK.
DO NOT REMOVE COVER (OR BACK).
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
This symbol is intended to alert the user to the
presence of uninsulated “dangerous voltage”
within the product’s enclosure that may be of
sufficient magnitude to constitute a risk of electric
This symbol is intended to alert the user to the
presence of important operation and main-
tenance (servicing) instructions in the literature
To prevent electric shock do not use this (polarized) plug
with an extension cord, receptacle or other outlet unless
the blades can be fully inserted to prevent blade ex-
To prevent electric shock, match wide blade of plug to
shock to persons.
accompanying the appliance.
posure.
wide slot, fully insert.
Caution:
WARNING !
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK.
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
INSTALLATION SERIES
Australian Monitor
2
AUS, EUR, USA
Copyright 3rd Dec 2003
Rev A: 3rd Dec 2003
Internal Revision Info
Rev 1 24/11/03
Rev 2 28/11/03
Rev 3 02/12/03

CONTENTS
Page
1. Introduction 4
2. Front Panel 5
3. Back Panel 6
4. Internal Adjustment 7
5. Block Diagram 9
6. Dimensions 10
7. Specifications 11
INSTALLATION SERIES
Australian Monitor
3

1. INTRODUCTION
The Australian Monitor Installation Series AMIS26 is a high quality 2 input, 6 output distribution
amplifier. The AMIS26's 2 inputs can be balanced or unbalanced and each input's sensitivity
can be switched between Mic and Line level. 24 VDC Phantom power is individually
switchable per input and for ease of setup, a four segment LED level meter is provided per
input. Each of the AMIS26's inputs is individually assignable to any of the 6 outputs via front
panel DIP switches. Outputs can be balanced or unbalanced and feature up to 30dB of
attenuation, so they can be run as any combination of line level or mic level outputs. Ample
label space is provided for both inputs and outputs and the AMIS26 is powered via a supplied
24VDC power supply. The AMIS26 provides a low noise, feature packed, signal routing
solution to cover a wide range of installation needs at a contractor friendly price.
4
INSTALLATION SERIES
Australian Monitor

INSTALLATION SERIES
Australian Monitor
1 2 4
2. FRONT PANEL
5
1. INPUT LEVEL CONTROL(S)
2. LEVEL METER
3. OUTPUT SECTION
3a. OUTPUT LEVEL CONTROLS
3b. INPUT ASSIGN SWITCHES
4. POWER LED
The input level controls are screwdriver adjustable trim pots. The input level controls can
boost or cut the input signal by up to 15dB.
These 4 segment LED meters show the strength of each of the AMIS26's input signals. LED
segments are calibrated to the following level markings and show the following colours:
-20dBu (green)
-10dBu (green)
0dBu (yellow)
+10dBu (red)
The output level controls are screwdriver adjustable trim pots. These level controls
attenuate the output level, with a range from -60dB at 'Minimum” position to 0dB at
“Maximum” position.
These recessed DIP switches assign input A and input B to a desired output.
This blue LED indicates the unit is powered “on”.
!
!
!
!
INPUT
ON
INSTALLATION SERIES
AMIS26
+10dB
-10dB
0dB
-20dB
0dB 0dB
-15dB -15dB+15dB +15dB
AB
OFF OFF OFF OFF OFF OFF0dB 0dB 0dB 0dB 0dB 0dB
OFF OFF OFF OFF OFF OFF
AAAAAABBBBBB
OUTPUT 1 OUTPUT 2 OUTPUT 3 OUTPUT 4 OUTPUT 5 OUTPUT 6
AB
3a
3b
Expanded view
3

6
INSTALLATION SERIES
Australian Monitor
3. BACK PANEL
1. INPUT A/B CONNECTORS
2. OUTPUT CONNECTORS
3. 24VDC POWER CONNECTOR
4. EARTH Stud
The balanced XLR inputs can be used as Mic or Line level inputs and are switched
between input sensitivities via internal DIP switches accessed through the lid (see internal
adjustments section page 7). The dual RCA inputs are Line level inputs only and are
internally summed to mono.
The AMIS26's outputs can be either balanced XLR or unbalanced dual RCA's. Both these
outputs can be switched between Mic level & Line level via internal DIP switches accessed
through the lid (see internal adjustments section page 7).
This 2.1mm connector accepts power from the provided 24VDC power supply.
In some circumstances it may be necessary to ground the unit to eliminate noise in the
system. This can be done by using this earth stud.
OUTPUT 6 OUTPUT 5 OUTPUT 4 OUTPUT 3 OUTPUT 2 OUTPUT 1 INPUT B INPUT A
EARTH DC INPUT
+24VDC
+ve
ENGINEERED BY AUDIO TELEX COMMUNICATIONS PTY LTD IN SYDNEY, AUSTRALIA
XLR
1 = Ground
2 = + Signal
3 = - Signal
RCA & XLR OUTPUTS ARE INTERNALLY SWITCHABLE BETWEEN MIC/LINE LEVEL
RCA INPUTS ARE LINE LEVEL
XLR INPUTS ARE INTERNALLY SWITCHABLE BETWEEN MIC/LINE LEVEL
12
3
PIN 2
HOT
+
PIN 3
COLD
-
PIN 1
GND
PIN 2
HOT
+
PIN 3
COLD
-
PIN 1
GND
FEMALE XLR MALE XLR
4
NOTE: This stud provides a connection to chassis ground. Audio ground is internally
tied to chassis ground.

INSTALLATION SERIES
Australian Monitor
7
4. INTERNAL ADJUSTMENT
1. Input Sensitivity DIP Switches.
DIP1 (INPUT A), DIP3 (INPUT B)
Switches 1, 2
2. Phantom Power Switch.
DIP1 (INPUT A), DIP3 (INPUT B)
Switch 3
Switches 1 and 2 on this 3 pole DIP switch when
selected to the “on” position will switch the
balanced XLR input to Mic level. The “off” position
will switch the balanced XLR input to Line level. The
Default setting is Line level.
This switch will enable 24VDC phantom power to
the desired input. The default setting is “off”.
NOTE: This switch does not effect the sensitivity of
the unbalanced dual RCA input.
NOTE: Before switching Phantom power on please ensure that no line level source
equipment is connected to the effected input.
NOTE: The following adjustments involve access to the inside of the AMIS26 and should
only be attempted by a qualified technician. All internal adjustments are
accessible through the lid of the AMIS26. Always turn off the DC power and
remove the DC power cord before accessing the inside of the AMIS26.
ON
123
ON
123
ON
12
ON
12
ON
12
DIP 1 DIP 3 DIP 2 DIP 4 DIP 5
Input 1
Line Level - Switch 1, 2 OFF
Mic Level - Switch 1, 2 ON
Phantom Power (24V)
Switch 3 ON/OFF
Line Level Output 1 - Switch 1 OFF
Mic Level Output 1 - Switch 1 ON
Line Level Output 2 - Switch 2 OFF
Mic Level Output 2 - Switch 2 ON
Line Level Output 3 - Switch 1 OFF
Mic Level Output 3 - Switch 1 ON
Line Level Output 4 - Switch 2 OFF
Mic Level Output 4 - Switch 2 ON
Line Level Output 5 - Switch 1 OFF
Mic Level Output 5 - Switch 1 ON
Line Level Output 6 - Switch 2 OFF
Mic Level Output 6 - Switch 2 ON
Input 2
Line Level - Switch 1, 2 OFF
Mic Level - Switch 1, 2 ON
Phantom Power (24V)
Switch 3 ON/OFF
12
ON
123
DIP 1
Input 1
Line Level - Switch 1, 2 OFF
Mic Level - Switch 1, 2 ON
Phantom Power (24V)
Switch 3 ON/OFF

8
INSTALLATION SERIES
Australian Monitor
NOTE: This switch effects both balanced XLR & dual RCA outputs.
3. Output Level DIP switch.
DIP 2 Switch 1 (OUTPUT 1)
DIP 2 Switch 2 (OUTPUT 2)
DIP 4 Switch 1 (OUTPUT 3)
DIP 4 Switch 2 (OUTPUT 4)
DIP 5 Switch 1 (OUTPUT 5)
DIP 5 Switch 2 (OUTPUT 6)
This switch will change the output sensitivity of the
desired output from Mic to Line level. When the
switch is “on” the output level will be switched to
Mic level.
ON
12
DIP 2
Line Level Output 1 - Switch 1 OFF
Mic Level Output 1 - Switch 1 ON
Line Level Output 2 - Switch 2 OFF
Mic Level Output 2 - Switch 2 ON
3

INSTALLATION SERIES
Australian Monitor
9
5. BLOCK DIAGRAM
-37dB PAD
SW1,2
P/P 24V
SW3
-37dB PAD
SW1,2
P/P 24V
SW3
DIP SW
DIP SW
RCA
RCA
XLR
XLR
INPUT A
INPUT B
+37dB
+37dB
-15dB
-15dB
+15dB
+15dB
+10dB
+10dB
0dB
0dB
-10dB
-10dB
-20dB
-20dB
VU
CONTROL
VU
CONTROL
INPUT
GAIN
INPUT
GAIN
OUTPUT
VOLUME
OUTPUT
VOLUME
OUTPUT
VOLUME
OUTPUT
VOLUME
OUTPUT
VOLUME
OUTPUT
VOLUME
A
A
A
A
A
A
B
B
B
B
B
B
-30dB
-30dB
-30dB
-30dB
-30dB
-30dB
0dB
0dB
0dB
0dB
0dB
0dB
0dB
0dB
0dB
0dB
0dB
0dB
0dB
0dB
0dB
0dB
0dB
0dB
XLR
XLR
XLR
XLR
XLR
XLR
RCA
RCA
RCA
RCA
RCA
RCA
0dB
0dB
OUTPUT 1
OUTPUT 2
OUTPUT 3
OUTPUT 4
OUTPUT 5
OUTPUT 6

10
INSTALLATION SERIES
Australian Monitor
6. DIMENSIONS
4.00 mm
164.00 mm
INPUT
ON
INSTALLATION SERIES
AMIS26
+10dB
-10dB
0dB
-20dB
0dB 0dB
-15dB -15dB+15dB +15dB
AB
OFF OFF OFF OFF OFF OFF0dB 0dB 0dB 0dB 0dB 0dB
OFF OFF OFF OFF OFF OFF
AAAAAABBBBBB
OUTPUT 1 OUTPUT 2 OUTPUT 3 OUTPUT 4 OUTPUT 5 OUTPUT 6
AB
466.00 mm
482.00 mm
44.00 mm
32.00 mm
OUTPUT 6 OUTPUT 5 OUTPUT 4 OUTPUT 3 OUTPUT 2 OUTPUT 1 INPUT B INPUT A
EARTH DC INPUT
+24VDC
+ve
ENGINEERED BY AUDIO TELEX COMMUNICATIONS PTY LTD IN SYDNEY, AUSTRALIA
XLR
1 = Ground
2 = + Signal
3 = - Signal
RCA & XLR OUTPUTS ARE INTERNALLY SWITCHABLE BETWEEN MIC/LINE LEVEL
RCA INPUTS ARE LINE LEVEL
XLR INPUTS ARE INTERNALLY SWITCHABLE BETWEEN MIC/LINE LEVEL
443.0 mm